Carriage-lamp.



No- 728,488. PATENTBD MAR. 24, 1903.

E. M. ROSENBLUTH,

CARRIAGE LAMP:

APPLICATION FILED NOV. 11, 1901.

H0 MODEL. 2 SHEETS-SHEET 1.

FIGI.

WITNESSES: 'INVENTOR:

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No.723,488'. v PATENTED MAR.24,1903.

E. M. ROSENBLUTH.

GARRIAGE LAMP.

APPLIOATION FILED NOV. 11, 1901.

K0 MODEL. 2 SHEETS-SHEET 2.

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UNITED STATES PATENT FFICE.

EDWIN M. RQSENBLUTH, Old-PHILADELPHIA, PENNSYLVANIA.

GARRl AGE-LAM P.

SPECIFICATION forming part of Letters Patent No. 723,488, dated March24, 1903. Application filed November ll, 1901. Serial No. 81,815. (Nomodel.)

- To all whom, it may concern:

Be it known that I, EDWIN M. ROSENBLUTH, of Philadelphia, in the Stateof Pennsylvania, have invented certain new and useful Improvements inCarriage-Lamps, whereof the following is a specification; referencebeing bad to the accompanyingdrawings.

My improvements are particularly applicable to lamps which are designedto burn oil while subjected to vibration. If the oil is re tained in afree state in communication with the burner in such a lamp, itssplashing prevents the uniform operation of the burner, and in order toprevent such disturbance the supply of oil is usually retained in a bodyof absorbent material. However, such an expedient of course reduces theoil-carrying capacity of the lamp by the bulk of the material in whichthe oil is suspended. 7

It is the object of my invention to provide a lamp wherein the maximumoil-carrying capacity is afiorded by retaining the oil-supply in a freestate, and the complete combustion of the oil is effected uniformlyregardless of vibrations of the lamp.

My invention comprises the'combi'nation, with a magazine wherein thesupply of oil is carried in the free state aside from the burnerwick, ofa screen arranged to exclude the splashing oil from the burner-wick andcon-' sisting of a capillary medium which is independent of said burnerand its wick, but transmits the oil uniformly thereto.

My invention also comprehends improved means to facilitate the completecombustion central cylindrical partition D, which is sepof the oil bydrafting a current of air into and out of the lamp-casing and thevariousnovelj features of construction and arrangement hereinafter moredefinitely specified and claimed.

In the accompanying drawings, Figure 1 is a vertical sectional view of alamp conveniently embodying my improvements, section being taken on theline 1 l in Fig. 2, the oilmagazine being-in elevation. Fig. 2 showssaid lamp sectioned on the line 2 2 in Fig. 1. Fig. 3 is a plansectional view of the ventchamber, taken on the line 33 in Figs. 1 and2. Fig. 4 is a fragmentary plan view of the bottom plate of thevent-chamber. Fig. 5 is a'vertical sectional view of the draft-domeshown in Fig. 1. Fig. 6 is a vertical sectional view of a modified formof draft-dome.

Referring to said figures, A is the flamecasing from Whose floor Aprojects the airdraft dome B, having an air-outlet b at its top. Thebottom of said dome B opens into the air-draft chamber A within theannular flange A depending from said floor A; Said flange A is providedwith apertures a to admit the proper supply of air to the burner Cthrough said draft-chamber A and dome B, and the products of combustion,&c., escape from the flame-casing A through the chimney The casing A isprovided with the socket of in its wall A to engage a supportingbracketattached to a vehicle, and said casing A is also provided with the frontlens or panel of glass A and the reflector A adjoining the rear Wall Aand immovably fixed in the casingA, said reflector being apertured at ato transmit light through the rear signal-jewel a The burner O isinclosed'by the dome B, with its wick-tube c projecting through thedom'e-outlet b and the wick-shaft 0 provided with the milled head 0?,extending through the slot b in the side of said dome. In order that thecurrent of air drafted from the exterior of the lamp through the dome Bmay be evenly distributed at the dome-outlet 12 around the burner-wicktube 0, I provide the baffle-flange E, which is perforated and serrated,as indicated at e, and conveniently fixed to said tube 0.

The oil-magazine D is provided with the arate from the burner O andcomprises the screw-thread d, engaged by the thread 0 of the burner,which is thus removably secured in fixed relation with the oil-magazine.Said magazine is provided with the screw-thread 01 which holds it inremovable relation with the casing A by engaging the screw-thread a'upon the flange A depending from the casing-floor A, as shown in Fig.2. In order that said magazine may be rotated to engage and disengagethe casing A while. the wickshaft 0 is engaged with the dome B, thelatter is mounted to rotate in the casing, its

bottom flange B being rotatably engaged by the flange A", which is fixedin the casingcapillary fabric screen D which incloses said wick andtransmits comminuted oil thereto through the capillary material D As theoil is withdrawn by combustion said material D is automaticallyrecharged with the free oil F through the perforations D in thecylindrical partition D., The quantity of oil available in the magazinemay be readily ascertained, and the latter may be refilled through theinlet (2'', provided with the removable screw-plug D.

As shown in Fig. 1, the chimney A is surrounded by the vent-chamber A,Wl1l(3l1 is separated from the chimney, but communicates with theinterior of the casing Athrough the apertures a and with the externalatmosphere through the apertures a, respectively below and above thediaphragm A which latter is inclosed by said chamber and provided withthe perforations 11 and air-passage 00 Said perforations and air-passagecooperate to transmit a current of air through said chamber A thuscooling the ceiling of the casing A'without interfering with the draftof the. chimney A so that complete combustion of the oil-vapor isattained and the polished walls of said casing A are not smoked ortarnished by the products of combustion. I

I find that the above-described vent structure is'rendered moreefiicient by providing the chimney A with a cowl A, through whose'ventsa the products of. combustion are discharged. The horizontal bottomplate A of said cowl comprises the central port a in registry with thechimney A but of less diameter than the latter, and air-inlets 01,exterior to the imperforate side wall of the chimney A and shielded bythe depending side wall A of the cowl. Any exterior current of airencountering the lamp rises through the inlets a, is deflected awayfromthe chimney A by the cowl-walls, as indicated by the arrows on Fig. 1,and is caused to augment the normal draft through the lamp instead ofinterfering therewith, as is the case if the lamp-chimney is directlyopened to the atmosphere through apertures in its side wall. Said cowlmay be readily cleaned, as its cover A is separable from the bodyportion thereof by means of its bayonet-joint connection therewith at a.

' I do not desire to limit myself to the precise construction which Ihave shown and described, as it is obvious that various modificationsmay be made therein without departing from the essential features of myinvention.

1. In a lamp, the combination with a casing inclosing a burner; of achimney above said burner; a perforated diaphragm surrounding saidchimney; and a vent-chamber inclosing' said diaphragm and communicatingwith the interior of said casing and with the outer atmosphere throughapertures respectively located below and above said diaphragm,substantially as set forth.

2. Ina lamp, the combination with a casing inclosing a burner; of achimney above said burner; a perforated diaphragm surrounding saidchimney; and avent-chamber inclosing said diaphragm and communicatingwith the interior of said casing and with the outer atmosphere, throughapertures respectively located below and above said diaphragm; a cowlfor said chimney, communicating therewith through a port of less areathan the chimney; air-inlets in said cowl exterior to the chimney; andan outlet in the top of said cowl, substantially as set forth.

3. In alamp, the combination witha burner having a wick; of a casinginclosing said burner; a draft-dome projecting within said casingsurrounding said burner; means upon said dome to rotatably engage saidcasing; an oil-magazine secured beneath said burner; and means to securesaid magazine and burner in removable relation with said casing,substantially as set forth.

4:. In a lamp, the combination with a burner having a wick; of a casinginclosing said burner; a draft-dome projecting within said casingsurrounding said burner; means upon said dome to rotatably'engage saidcasing; an oil-magazine secured beneath said burner; and means upon saidmagazine to engage said casing, substantially as set forth.

5. In a lamp, the combination with a casing inclosing a burner; of achimney above said burner; a vent-chamber surrounding said chimney butseparate therefrom; a perforated wall separating said vent-chamber fromsaid casing,through which said vent-chamber communicates with theinterior of said casing; and a perforated outer wall of saidvent-chamber through which it communicates with the outer atmosphere,substantially as set forth.

6. In a lamp, the combination with a casing inclosing a burner; of achimney comprising an imperforate sidewall, above said burner; avent-chamber surrounding said chimney but separate therefrom; aperforated wall separatingsaid chamber from said casing through whichsaid vent-chamber communicateswith the interior of said casing; aperforated outer wall of said vent-chamber through which it communicateswith the outer atmosphere; 2. cowl fixed to said chimney andcommunicating therewith through a port of less area than said chimney,centrally located in a plate extending horizontally exterior to saidchimney; air-inlets to said cowl, opening through said horizontal plate,exterior to the imperforate side wall of said chimney; and a vent insaid cowl above said plate, substantially as set forth.

7. In a lamp, the combination with a casing inclosing a burner; of achimney comprising an imperforate side wall above saidburner; I saidchimney; a cover for said cowl comprisa vent-chamber surrounding saidchimney I ing a vent for the products of combustion; but separatetherefrom;aperforatedwallsepand means to removably secure said cover :5arating said vent-chamber from said casing, to said cowl, substantiallyas set forth. through which said vent-chamber communi- In testimonywhereof I have hereunto cates with the interior of said casing; apersigned my name, at Philadelphia, Pennsylforated outer wall of saidvent chamber Vania, this 4th day of November, 1901.

through which it communicates with the outer 7 atmosphere; a cowl fixedto said chimney and EDWIN ROSENBLUTH' 10 communicating therewith througha port of Witnesses:

less area than said chimney; air-inlets in said GEO. B. WUNDER, cowlexterior to the imperforate side Wall of E. M. SILBERMAN.

